My 2010 F150 5.4 would occasionally shut down when I would shift from reverse to drive, I had no check engine lights. So I pulled codes and got Trouble codes U210B and U0109. Does anyone have any ideas.

 

According to AllData, both of those indicate loss of communication with the fuel pump controller. It looks like the fuel pump module or fuel pump relay is the likely culprit, or possibly a broken/chafed wire that's shorting out.

 

It's probably either an open circuit or bad ground caused from a loose wire/cut wire. Like the person above stated it is for communication with the fuel pump controls. Best of luck hope you find the culprit!

 

Greetings !
I was running aftermarket fog light wires through the firewall grommet.
Lights work great, but now I have the infamous wrench symbol on my dash.

Connected my Launch diagnostic and retrieved this code. U210B:00-6C
Which would clear, but return.

"Lost communication between Fuel Pump Control Module A and Restraints Control Module."
I could have pinched or damaged the communication wire going through the firewall.

Truck starts and runs great. Just don't wanna be on that long dark road at night and BROKE DOWN.

It's difficult to find which wire is the wire I'm looking for not to mention there's no room.
I checked my Haynes' wiring schematics, and scoured the interweb. Nothing.

Any guidance which wire would be greatly appreciated.

Thank-you.